For humans, the country has an important role of life decisions. Water makes up about 60-70% of the body weight, the water distribution around the blood, muscles, brain, lungs, bones and joints. Humans can tolerate hunger for a few months, but the lack of water for three days will be more likely to die. Each day the body loses about 1.5 liters of water through the bowel, sweating, breathing, which helps us reduce the risk of cancer. When working, physical activity will take more water. So, to keep the body's water content normally, need to drink water to replace the lost. Water needs of every person varies depending on age, body temperature, weight, activity level, work, weather.
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